body {
    background: #ddd;
}

.clear {
    clear: both;
}

.container {
    margin: 15px auto;
    width: 1140px;
    position: relative;
}

.timeline-box {
    background: #fff;
    padding: 15px;
    position: relative;
    min-height: 90vh;
}

.timeline-main {
    position: relative;
    min-height: 85vh;
}

.timeline-main > h1 {
    font-size: 30px;
    background: #fff;
    z-index: 1;
    position: relative;
    color: #009688;
    /*padding-left: 184px;*/
    margin-left: 17%; /*写给不支持calc()的浏览器*/
    margin-left: -moz-calc(18% - 16px);
    margin-left: -webkit-calc(18% - 16px);
    margin-left: calc(18% - 16px);
}

.timeline-main > h1 > i {
    padding-right: 10px;
    font-size: 36px;
}

.timeline-main h2 > i {
    padding-left: 5px;
}

.timeline-main h2,
.timeline-main h3 {
    /*width: 180px;*/
    width: 16%;
    text-align: right;
}

.timeline-main h2,
.timeline-main h2 > a {
    font-size: 30px;
    margin: 5px 0;
    color: #1E9FFF;
}

.timeline-main h3,
.timeline-main h3 > a {
    font-size: 24px;
    margin: 2px 0;
    color: #FF5722;
}

.timeline-month > ul > li {
    padding: 10px 0;
}

.timeline-month > ul > li .h4 {
    display: inline-block;
    /*width: 180px;*/
    width: 16%;
    text-align: right;
    float: left;
}

.date {
    display: inline-block;
    padding: 2px 5px;
    color: #009688;
    font-size: 16px;
}

.dot-circle {
    color: #009688;
    /*width: 42px;*/
    width: 4%;
    text-align: center;
    font-size: 22px;
    z-index: 1;
    position: relative;
    background: #fff;
    float: left;
}

.content {
    max-width: 70%;
    float: left;
    padding: 10px;
    margin-left: 10px;
    position: relative;
    z-index: 1;
    background: #009688;
    color: #fff;
}

.content::before {
    position: absolute;
    left: -20px;
    top: 6px;
    height: 0;
    width: 0;
    content: '';
    border: 10px solid rgba(255, 255, 255, 0.00);
    border-top: 6px solid rgba(255, 255, 255, 0.00);
    border-bottom: 6px solid rgba(255, 255, 255, 0.00);
    border-right-color: #009688;
}

.timeline-line {
    position: absolute;
    /*left: 200px;*/
    left: 18%;
    top: 0;
    height: 100%;
    width: 2px;
    background: #009688;
    z-index: 0;
}

.timeline-year {
    margin: 20px 0;
}

.child-nav {
    margin: 15px 0;
    text-align: center;
    height: 39px;
    background: #fff;
    border-bottom: 1px solid #5FB878;
}

.child-nav-btn {
    padding: 0 20px;
    width: auto;
    font-size: 14px;
    line-height: 40px;
    display: inline-block;
    cursor: pointer;
}

.child-nav-btn-this {
    background: #5FB878;
    color: #fff;
}
.timeLineForm {
    width: 260px;
    margin: 20px auto;
    background: #fff;
}

#timeLineDiv {
    width: 500px;
    margin: 20px auto;
    background: #fff;
}